Bug FAQWestern Stegea
Stegea salutalis · Order: Lepidoptera · Family: Crambidae
Western stegea moths have a wingspan of about 18 mm. Adults are on the wing from April through September, producing two generations each year. They occur across much of North America, from British Columbia and several western U.S. states down into north-western Mexico.
Source: Wikipedia
How to recognize it
Adult western stegea show a lot of variation depending on where and when they are found.
Source: Wikipedia
Size
The species' wingspan measures roughly 18 mm.
Source: Wikipedia
Where it lives
It has been recorded in many western North American locations, including Arizona, California, Colorado, Montana, New Mexico, Oregon, Texas, Utah, and British Columbia.
Source: Wikipedia
Life cycle
Adults fly from April to September and produce two generations each year.
Source: Wikipedia
When you see it
The flight period spans April through September.
Source: Wikipedia
Where it comes from
Its native range covers much of North America, extending south into north-western Mexico.
Source: Wikipedia
Where it is found in the US
Recorded in 11 of 51 states and DC. Most records: California, Montana, Colorado, Arizona, Washington, Idaho, Nebraska, New Mexico.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in United States; native in Canada. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
When can I see western stegea moths?
They are active from April to September, with two generations per year.
Source: Wikipedia
Where does western stegea live?
It is found across western North America, from British Columbia and many western U.S. states down into north-western Mexico.
Source: Wikipedia
Do western stegea moths look different in different places?
Adults show considerable geographic and seasonal variation.
Source: Wikipedia
Same family (Crambidae)
Box Tree MothCydalima perspectalisDamages trees, gardens or crops
Celery Leaftier MothUdea rubigalis
Elegant Grass-veneerMicrocrambus elegans
Hawaiian Beet Webworm MothSpoladea recurvalisDamages trees, gardens or crops
Garden Grass-veneerChrysoteuchia culmellaDamages trees, gardens or crops
Bluegrass Webworm MothParapediasia teterrellusDamages trees, gardens or cropsSources
- Wikipedia: https://en.wikipedia.org/wiki/Stegea_salutalis
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-28 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-28.